Rock crusher and pulverizer.



No. 801,921. PATENTBD OCT. 17. 1905. A. SCOTT.

ROCK GRUSHER AND PULVERIZER.

No. 801,921. PATBNTED OCT. 17, 1905. A. SCOTT. ROCK GRUSHER ANDPULV'BRIZER."

APPLICATION FILED MAY 4.1903.

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NITID STATES PATENT OFFICE.

ROCK CRUSHER AND PULVERIZER..

Specification of Letters Patent.

Patented Oct. 17, 1905.

Application led May 4, 1903. Serial No. 155,570.

To @ZZ whom, it may concern:

Be it known that I, ARCHIBALD SCOTT, a citi- Zen of the United States,residing at Carters, in the county of Tuolumne and State of California,have invented certain new and useful Improvements in Rock Crushers andPulverizers; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to improvements in rock-Crushers, andparticularly to crushers in which the material is subject to a crushingand grinding action for crushing rock in a dry condition to any suitabledegree of ineness.

It consists in certain novel constructions, combinations, andarrangements of parts, as will be hereinafter fully described andclaimed.

In the accompanying drawings, Figure 1 is a top plan view of the Crusherconstructed in accordance with this invention. Fig. 2 is a verticallongitudinal section through the same, the crushing-faces and the leverbeing shown in side elevation. Fig. 3 is a transverse vertical sectionon the line of the shaft which supports the rocking crusher. Fig. 4 is atransverse sectional View taken upon the axis of the eccentric andshowing parts of the mechanism in elevation.

This invention is designed to supply rockcrushers which may be made in asimple and durable manner and yet are capable of having both a crushingand a grinding action upon the rock or other materials passed throughthem and will reduce the material to a required fineness.

In the accompanying drawingsI have illustrated a practical embodiment ofthe invention, in which a frame l is employed, which is closed at oneend, as at 2. while its other end is open and adapted to receive betweenits side walls a crushing-lever 3 and an operating slide-box 4, whichactuates it. Upon the inner surface of the end wall 2 is secured acrushing-face 5, preferably of considerable thickness and formed of hardmaterial. This crushing-face is preferably removably mounted in thecasing, its lower end resting upon the lugs 6 upon each side of theframe, which support the. said crushing-face at a proper height in theframe. The removable crushing face or plate 5 is held in position byside wearing-plates, as 7,- which are tapered, as shown in Fig. 2. Theedges of these plates are beveled, so as to engage overhanging edges 8upon the frame 1 upon one side and beveled faces 9, formed on thewearing-plate 5 at their other sides. As clearly seen in Fig. l, whenthe side wearing-plates 7 are put into place they are in position tolock the crushing face or plate 5 in position.

Within the frame 1 is pivotally mounted the lever 3, carrying acrushing-head 9, the face of which is recessed to receive a wearingplateIO. .The lever is mounted upon a shaft 11, to which it is keyed, thesaid shaft projecting beyond the Crusher-head 9 a sufficient distance toform supporting-trunnions l2, which engage bearings 13, formed in theside walls of the frame l. The shaft 1l being keyed to the lever 3 is ofcourse rocked by the movement of said lever within the bearings 13. Theshaft Il is located near the crushing-face l0 of the lever andpreferably near the lower edge of said lever, asshownin Fig. 2. Thesurface of the crushing-face is formed upon the arc of a circle struckfrom some given point as a center, the said point being taken upon aline in a horizontal plane passing through the axis of the shaft 11. Thecurvature of the crushing-face will be increased or diminished accordingto the distance of said center fromthe crushing-face. The crushing-faceis thus segmental in form, and the plate l0 may therefore be reversed inposition in the recess of the crushing-head when such turning becomesnecessary by the uneven wear upon the crushing-face. The recess in thecrushing-head is formed with overhanging end flanges 14 for engaging thebeveled ends of the plate IO. The plate IO will be slipped into positionendwise from one side of the crushing-head 9. It is clamped intoposition by means of bolts 15, having elongated tapering heads 16, thesaid bolts being adapted to be drawn up by nuts 17 at the rear of theCrusher-head. The crushingface lO can be removed and replaced veryquickly at any time by removing the bolts 15. The bearings 13 projectsome distance beyond the side walls of the frame 1 and are formed withremovable caps 18, which are held in position,

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which is formed at the top with inclosing flanges 22 upon each side,which extend around and receive the flanges 21 of the lever. rlhe loweredge of the lever and fianges 21 rest upon a broad bearing-face 23,formed in the recess of the box 4, the said surface being preferablyprovided with Babbitt metal to receive the wear of the lever. The outerfaces of the flanges 21 may also be provided with Babbitt metal, as at24, if desired, while the inner faces of the flanges 22, which engagethe same, may be provided with bearing-plates 25, capable of adjustmentby means of screws 26 for taking up any wear in the part. It will thusbe seen that the box 4 is capable of longitudinal movement with respectto the fianges 21 of the lever, and it will also be evident that therising and falling of the box will produce a movement of the outer endof the lever and the rocking of the crusher-head 9 upon the trunnions12. A gyrating' movement of the box 4 is thus produced.

r1`he'box 4 is formed with a bearing 27 in its lower portion forengaging an actuatingeccentric 28, which is carried by a shaft 29. Theshaft 29 is journaled in bearings 30, forme-d in the sides of theframe 1. The eccentric is inclosed within the bearing 27 by a removablebearing-block, as 31, also adapted to fit upon the said eccentric. Anywear of the bearing upon the eccentric may be taken up by means ofwedge-bolts 32, which pass the lower portion of the bearing-box 4. Thesewedge-bolts are provided with suitable nuts 33 for adjusting the boltsand taking up such wear. The bearing in the box 4 may be provided withBabbitt metal, as illustrated, if desired. Suitable oiling-cups areprovided for the various bearings, as illustrated in the drawings. Theoil-cup for delivering' oil to the lower surface of the lever feeds oilto a series of channels or passages 34, which pass downwardly throughthe end of the said lever to the said bearing-faces.

It will be evident from the above description that when theeccentric-shaft 29 is rotated the eccentric will be caused to move thebox 4 up and down and will thus raise and depress the end of the lever3, causing a rocking of the crushing-head 9. The sliding engagement ofthe said box with the flanges 21 of the lever permit the box toaccommodate itself to every movement of the eccentric and yet be capableof properly actuating the lever 3. The material on first entering thecavity between the crushing-faces and while thus some distance above theshaft 11 will be subject to a more or less crushing action at the upperend of the crushing-head 9. As the material crushed becomes finer anddescends between the crushing-faces to a point opposite the shaft 1l therocking of the crushing-head will have a decided grinding action andtend to further pulverize the material.

The crushing-faces 5 and lOcan be removed and replaced at any time orreversed in either position, according to the wear upon them, and thesaid wearing-plates, which wedge the end wearing-plate 5 in place, maybeeasily removed at any time.

The mechanism will be found to be exceedingly simple and yet capable ofdeveloping any power necessary for crushing rock or other materials andeffectively pulverizing the same.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-- 1. A crusher comprising astationary crushing member, a rocking crusher-head, an integral leverprojecting outwardly from the crusher-head, the said crusher-head beingpivoted at a point adjacent to the stationary crushing member, agyrating bearing-box mounted outside the lever and below the same, thesaid lever being formed with a vertical web and horizontal flangesprojecting therefrom at its lower edge forming a broad bearing having amovable engagement with the gyrating bearing-box, and a cam member foroperating the gyrating bearing-box.

2. A crusher comprising a stationary crushing-face, a rockingcrusher-head pivotally mounted in front of the crushing-face, a leverprojecting outwardly from the crusher-head and formed approximatelyT-shaped at its upper end, the flanges of the said T-shaped portionbeing arranged at the lower edge of the lever, a bearing-box supportingthe said T- shaped lever end and sliding with respect to the broadbearing thereof, flanges carried by the bearing-box and inclosing theflanges of the T-shaped lever for movably` holding the said lever withrespect to said box, and an eccentric engaging the said box forimparting a gyrating movement to it and causing the rocking of thecrusher-head.

3. Acrusher comprisinga casing, a stationary crushing-plate mounted insaid frame, a rocking segmental crushing-head arranged opposite thereto,pivoted supporting means engaging said head arranged adjacent to thecrushing-face thereof fixed bearings for said means, a projecting arm orlever for moving said head, a sliding bearing-box formed with a way forsupporting the said lever, iianges carried by the said box andoverhanging portions of the lever, and an eccentric for imparting agyrating movement to the bearingbox and thus producing a rocking actionin the crushing-head.

4. A crusher comprising a casing, a crushing-face mounted therein, arocking crusherhead supported opposite said face by fixed bearings, alever projecting therefrom, said lever having laterally-extendingfianges at its outer end, a bearing-box having inclosing flanges forengaging the flanges of the lever and capable of a sliding movementthereon, and an eccentric for imparting a gyrating movement to thebearing-box.

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5. A Crusher comprising a stationary crushing-face,'a Crusher-headmounted. in front of said face, a shaft carrying the said Crusherheadand journaled in the framing' of the Crusher, a vertical web extendingoutwardly from the Crusher-head, horizontal flanges eX- tendinglaterally from the lower edge of said web at the outer end of the lever,a transverse shaft mounted in the Crusher below the end of the lever, aneccentric rigidly secured to said shaft, means for movably supportingthe end of the lever and connecting the same to the eccentric made up ofa bearing-box surroundlng the eccentric and arranged outside the bodyportion of the lever below the same I 5 and flanges carried by thebearing-box and overhanging t-he flanges of the lever.

In testimony whereof I hereunto aiX my signature in presence of twowitnesses.

ARCHIBALD SCOTT.

Witnesses:

W. H. SCOTT, E. BARTLETT.

